package com.watson.juc.single;

/**
 * @author watson
 * @date 2021/8/2 13:49
 * @Description: 静态内部类
 **/
public class Holder {
    private Holder() {
    }

    public static Holder getInstance() {
        return InnerClass.HOLDER;
    }

    public static class InnerClass {
        private static final Holder HOLDER = new Holder();
    }
}
